Flatbed ladder



FIG. 1 is a perspective view of the flatbed ladder showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side elevational view thereof, with the right side constituting a mirror-image of the left side;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof.

The broken lines showing a flatbed is for illustrative purposes only which do not form a part of the claimed design. 

The ornamental design for a flatbed ladder, as shown and described. 